diff --git a/CMakeLists.txt b/CMakeLists.txt
index 642e2b8..5bc33a4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,6 +1,6 @@
 cmake_minimum_required(VERSION 3.15.2)
 # 设置工程名称
-project(stt VERSION 1.4 LANGUAGES CXX)
+project(stt VERSION 1.4.1 LANGUAGES CXX)
 
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -O3")
 set(EXECUTABLE_OUTPUT_PATH ${PROJECT_SOURCE_DIR})
diff --git a/src/main.cc b/src/main.cc
index 85fe323..1781e54 100644
--- a/src/main.cc
+++ b/src/main.cc
@@ -1,6 +1,15 @@
+/***********************************
+ * Update histories:
+ * 
+ * v1.4.1
+ * 1. Add minimal resolution and max depth controls for the topography constrain.
+ * 2. Add data format and update history sections in help information.
+ * 
+ ***********************************/
+
 #include "stt_class.h"
 
-void disp_help(char* proname){
+void disp_help(char* proname, bool show_all){
 	string exe_name = proname;
 	exe_name = " " + exe_name + 
 " -d<minimal-depth>/<maximal-depth> \
@@ -23,7 +32,7 @@ void disp_help(char* proname){
 	clog << " / __|| __|| __|\n";
 	clog << " \\__ \\| |_ | |_ \n";
 	clog << " |___/ \\__| \\__|\n";
-	clog << proname << " - v1.4 - A generator of the Spherical Triangular Tessellation (STT).\n\
+	clog << proname << " - v1.4.1 - A generator of the Spherical Triangular Tessellation (STT).\n\
 This program is distributed under a dual licensing scheme. It is free for academic use, but a commercial license is required for commercial use.\n\n";
 	clog << "Author: Dr. Yi Zhang (yizhang-geo@zju.edu.cn)\n\n";
 	clog << "Usage: " << exe_name << endl << endl;
@@ -42,7 +51,57 @@ This program is distributed under a dual licensing scheme. It is free for academ
 	clog << "\t-s\tInput outline polygon location(.txt) filename." << endl;
 	clog << "\t-k\tInput hole polygon location(.txt) filename." << endl;
 	clog << "\t-z\tInput topography(.txt) filename." << endl;
-	clog << "\t-h\tShow help information." << endl;
+	clog << "\t-h\tShow full help information." << endl;
+
+	if (!show_all) return;
+
+	clog << R"(
+Input File Formats:
+
+1. Point Control Format
+Controls refinement around specific points. Each point is defined by its location and refinement parameters:
+
+# <longitude> <latitude> <maximal-depth> <minimal-resolution> <physical-group>
+# longitude, latitude: Coordinates in degrees
+# maximal-depth: Maximum refinement depth for this point
+# minimal-resolution: Minimum cell size in degrees
+# physical-group: Group identifier for the refined region
+-45 -45 5 1.0 7
+45 -45 5 1.0 7
+
+2. Circle Control Format
+Controls refinement around spherical caps. Each circle is defined by its center, radius, and refinement parameters:
+
+# <longitude> <latitude> <spherical-cap-degree> <maximal-depth> <minimal-resolution> <physical-group>
+# spherical-cap-degree: Angular radius of the cap in degrees
+45 60 30 5 0.1 12
+-20 -45 20 6 0.1 13
+
+3. Line/Polygon Control Format
+Controls refinement along lines or around polygons. Each shape is defined by a sequence of points and refinement parameters:
+
+# First line: <number-of-points> <maximal-depth> <minimal-resolution> <physical-group>
+# Following lines: <longitude> <latitude> of each point
+# Points are connected in sequence, last point connects to first for polygons
+4 6 0.1 5
+-10 10
+50 15
+60 55
+-15 50
+
+4. Topography Control Format
+Controls refinement based on elevation data. The refinement is based on elevation variation within triangles:
+
+# First line: <maximum-STD> <maximal-depth> <minimal-resolution> <physical-group>
+# Following lines: <longitude> <latitude> <elevation(meters)>
+# maximum-STD: Maximum allowed standard deviation of elevation within a triangle
+200.0 10 -1 5
+-179.95 89.95 -4203.20
+-179.85 89.95 -4203.07
+-179.75 89.95 -4203.47
+
+Note: maximum-STD represents the maximum standard deviation of elevation allowed in a triangle. A triangle will be refined if the elevation variation within it exceeds this threshold.)" << std::endl;
+	return;
 }
 
 int main(int argc, char* argv[]){
@@ -68,7 +127,7 @@ int main(int argc, char* argv[]){
 
 	// show help information is no options is read
 	if (argc == 1){
-		disp_help(argv[0]);
+		disp_help(argv[0], false);
 		return 0;
 	}
 
@@ -77,7 +136,7 @@ int main(int argc, char* argv[]){
 		// get option number
 		switch (curr){
 			case 'h': // show help information
-				disp_help(argv[0]); return 0;
+				disp_help(argv[0], true); return 0;
 			case 'd':
 				option_number = 0; break;
 			case 'r':
diff --git a/src/stt_in_triangle_topo.cc b/src/stt_in_triangle_topo.cc
index 9ae70ef..bbb8c80 100644
--- a/src/stt_in_triangle_topo.cc
+++ b/src/stt_in_triangle_topo.cc
@@ -24,10 +24,14 @@ int SttGenerator::InTriangleTopo(QuadTreeNode* node, const ControlTopo& in_topo,
 		}
 		node_resolution = node_resolution*60/Pi;
 
-		// 将控制点的组别赋值给当前节点
-		node->tri.physic_group = in_topo.physic_group;
-
-        if (data_std(in_topo.topo) >= diff_threshold) return 1;
+		if (in_topo.max_depth >= node_depth && 
+			node_resolution >= in_topo.minimal_resolution && 
+			data_std(in_topo.topo) >= diff_threshold)
+		{
+			// 将控制点的组别赋值给当前节点
+			node->tri.physic_group = in_topo.physic_group;
+			return 1;
+		}
 		else return 0;
 	}
 }
\ No newline at end of file